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| Number | Title | Issue Date |
| 8182201 | Load distribution system for gas turbine engine There is provided an axial bearing load distribution system for a gas turbine engine of the type having a low pressure rotor supported by axial bearings. The system comprises a line having an inlet end positioned in a high-pressure compressor gas path downstream of ... | 05/22/2012 |
| 8147178 | Centrifugal compressor forward thrust and turbine cooling apparatus A gas turbine engine centrifugal compressor axial forward thrust apparatus bleeds impeller tip aft bleed flow from between an annular centrifugal compressor impeller of a high pressure rotor and a diffuser directly downstream of the impeller. The apparatus then uses... | 04/03/2012 |
| 8133007 | Multiple-stage centrifugal pump including a controlled leakage hydraulic balancing drum A multiple-stage centrifugal pump comprises a balancing drum coupled to the pump shaft, being axially locked, and turning in a pump body cavity with a minimum clearance; a rotary ring element mounted on the balancing drum and rotating therewith, but being able of ax... | 03/13/2012 |
| 8092150 | Gas turbine with axial thrust balance A method for axial thrust control of a gas turbine, and a gas turbine with a device for controlling axial thrust are provided. A gas turbine, with regard to aerodynamic forces and pressure forces, which exert an axial force upon the rotor, is configured such that at... | 01/10/2012 |
| 8075251 | Hydraulic seal for a turbocharger A hydraulic seal is defined between a rotating member such as a turbocharger shaft and a stationary member such as part of a bearing housing of a turbocharger. The members define a projecting annular disc that is received in an annular channel that is filled with hy... | 12/13/2011 |
| 8061970 | Compact shaft support device for turbomachines A shaft support device for a turbomachine including a rotary body and a stationary body. The rotary body is attached to a shaft of the turbomachine, and includes a first portion and a second portion. The first portion has a thrust bearing collar and the second porti... | 11/22/2011 |
| 8021105 | Hydrodynamic axial bearing A hydrodynamic axial bearing with a floating disk is disclosed wherein two lubricating gaps on the two sides of the floating disk are formed by supporting surfaces of different size. This makes it possible to provide identical lubricating gaps on both sides, despite... | 09/20/2011 |
| 8002518 | Rotary pump with hydrodynamically suspended impeller A pump assembly adapted for continuous flow pumping of blood. In a particular form the pump is a centrifugal pump wherein the impeller is entirely sealed within the pump housing and is hydrodynamically suspended therein as the impeller rotates within the fluid urged... | 08/23/2011 |
| 7976271 | Stabilizing drive for contactless rotary blood pump impeller A rotary blood pump includes a casing defining a pumping chamber. The pumping chamber has a blood inlet and a tangential blood outlet. One or more motor stators are provided outside of the pumping chamber. A rotatable impeller is within the pumping chamber and is ad... | 07/12/2011 |
| RE42432 | Rotary pressure exchanger A pressure exchanger for the transfer of pressure energy from a high pressure fluid stream to a lower pressure fluid stream wherein a generally cylindrical housing contains a rotor having a plurality of channels extending axially therethrough and a pair of end cover... | 06/07/2011 |
| 7931436 | Roller bearings, and struts and gas turbine engines having such bearings Roller bearings, and struts and gas turbine engines using such bearings are provided. In this regard, a representative roller bearing for a gas turbine engine includes: a roller having a rolling surface and an end; a race having a flange and defining a raceway, the ... | 04/26/2011 |
| 7828512 | Arrangement for supporting a shaft of a vacuum pump and a vacuum pump with such an arrangement An arrangement for supporting a shaft of a vacuum pump includes a first bearing for supporting the shaft at one of its end, a second bearing for supporting the shaft at another of its ends and formed as a rolling bearing, a holder for receiving the second bearing an... | 11/09/2010 |
| 7819622 | Method for securing a stator assembly An example exit guide vane for a gas turbine engine is mounted adjacent to a diffuser case defining an air flow path. A thrust balance seal is attached to the diffuser and the exit guide vane is mounted adjacent the diffuser case for guiding air flow into the air fl... | 10/26/2010 |
| 7753645 | Rotary blood pump with opposing spindle magnets and contoured housing Various “contactless” bearing mechanisms including hydrodynamic and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. In one embodiment, a pump apparatus includes a pump housing defining a pumping chamber. The housi... | 07/13/2010 |
| 7731476 | Method and device for reducing axial thrust and radial oscillations and rotary machines using same A method and apparatus to reduce the axial thrust in rotary machines such as compressors, centrifugal pumps, turbines, etc. includes providing additional peripheral restrictive means (7) attached at the peripheral portion of the disk forming the subdividing m... | 06/08/2010 |
| 7665954 | Hydrodynamic bearing runner for use in tilting pad thrust bearing assemblies for electric submersible pumps An electrical submersible pump runner having a core layer and a wear layer affixed to the core layer. One embodiment of the invention provides an electrical submersible pump that includes a motor section and a centrifugal pump section. A seal section and rotary gas ... | 02/23/2010 |
| 7530781 | Pump device A pump device for pressurizing a fluid to be fed, comprises: a rotary shaft, a bearing including a bearing surface adapted to face to the rotary shaft so that the rotary shaft is supported on the bearing surface in a rotatable manner, and an impeller fixed to the ro... | 05/12/2009 |
| 7524162 | Rotor for a rotating machine, in particular a steam turbine A rotor for a rotating machine, in particular a steam turbine includes at least one subregion composed of a metal structure having a reduced density and including a multiplicity of finely distributed cavities. ... | 04/28/2009 |
| 7476077 | Rotary pump with exclusively hydrodynamically suspended impeller A pump assembly 1, 33, 200 adapted for continuous flow pumping of blood. In a particular form the pump 1, 200 is a centrifugal pump wherein the impeller 100, 204 is entirely sealed within the pump housing 2, 201 and is exclusively hydrody... | 01/13/2009 |
| 7402020 | ACM cooling flow path and thrust load design An air cycle machine includes a housing having a compressor housing portion. A shaft is supported by the housing and includes a thrust runner. A hydrodynamic thrust bearing is arranged adjacent to the thrust runner and includes upstream and downstream sides. A compr... | 07/22/2008 |
| 7390164 | Fixing structure for fixing rotor to rotor shaft, and turbo molecular pump having the fixing structure Provided are a fixing structure for fixing a rotor to a rotor shaft, in which the contact state of the contact surfaces of the rotor shaft and the rotor is stabilized to thereby maintain the rotation balance of the rotor shaft and the rotor, making it possible to pr... | 06/24/2008 |
| 7363762 | Gas turbine engines seal assembly and methods of assembling the same A method of assembling a gas turbine engine includes providing a gas turbine engine including a compressor, a combustor downstream from the compressor, and a turbine coupled to the compressor, and coupling a seal assembly aft of the compressor such that air discharg... | 04/29/2008 |
| 7354240 | Centrifugal turbo machine with axial thrust control member There is provided a centrifugal turbo machine comprising: a volute casing; a rotation axis coupled with the volute casing through a bearing; an impeller which is coupled to an end of the rotation axis and sucks fluid with a centrifugal force due to its rotation; and... | 04/08/2008 |
| 7347283 | Using a rotating inner member to drive a tool in a hollow outer member A rotating inner member is used to drive a downhole tool housed within the hollow outer member of a dual-member drill string. The downhole tool preferably will be adapted to receive rotational energy from the inner member. In a preferred embodiment, the downhole too... | 03/25/2008 |
| 7341138 | Conveyor idle roller assembly Idle roller assembly suitable for use in trough type belt conveyors is provided having an elongate shaft and spaced apart first and second roller bearing assemblies, each having mounted thereabout an annular hub. A cylindrical tubular roller is mounted to and spans ... | 03/11/2008 |
| 7338252 | Pump for the transporting of fluids and of mixtures of fluids A pump for the transporting of fluids and/or of mixtures of fluids includes a housing (1) and at least one restrictor gap seal which is provided in the housing (1) to reduce the pressure in a restrictor gap along a rotatable part (2) of the pump... | 03/04/2008 |
| 7326029 | Centrifugal pump and an impeller thereof The present invention relates to a centrifugal pump and an impeller thereof. The present invention especially relates to modifying an impeller of a centrifugal pump in such a way that the pump may be used without a risk of damaging a shaft seal or the like at capaci... | 02/05/2008 |
| 7322207 | Air refrigerant cooling apparatus and air refrigeration system using the air refigerant cooling apparatus An air refrigerant cooling apparatus has magnetic bearings with high reliability and high efficiency. The air refrigerant cooling apparatus includes a motor having a first magnetic bearing and a second magnetic bearing for supporting a shaft, a compressor and an exp... | 01/29/2008 |
| 7322181 | Turbofan engine with the fan fixed to a drive shaft supported by a first and a second bearing The turbojet includes a fixed structure, a fan rotor fixed to a drive shaft supported by a first bearing and a second bearing. The second bearing is mounted on the fixed structure through a bearing support part. The first bearing is mounted on the fixed structure of... | 01/29/2008 |
| 7322180 | Turbo-jet engine with fan integral with a drive shaft supported by first and second bearings A turbo-jet engine including a fixed structure and a fan rotor mounted on a drive shaft supported by a first bearing and a second bearing. The engine further comprises an axial retaining device configured to form an emergency bearing and to cooperate with the fixed ... | 01/29/2008 |
| 7314347 | Pressurized fluid bladeless turbine engine with opposing fluid intake assemblies A bladeless pressurized fluid turbine engine having a bladeless turbine, internal, concentric or circumferential shaft fluid ways which transmit pressurized gas to the turbine, and a pair of opposing pressurized fluid intake assemblies. Each intake assembly has a fi... | 01/01/2008 |
| 7290984 | Multistage pump A centrifugal pump includes plural pump stages, each comprising an impeller assembly, a stationary disc assembly and a diffuser assembly, all disposed about an impeller shaft. A floating impeller hub seal is supported by a diffuser assembly to minimize fluid recircu... | 11/06/2007 |
| 7267523 | Composite shaft A turbine shaft may be used to remove a heat load from pliant bearings without requiring the use of a process fluid for cooling the turbine shaft. The turbine shaft comprises a heat conductive sleeve disposed between an outer surface of a tie rod shaft and an inner ... | 09/11/2007 |
| 7252474 | Sealing arrangement in a compressor A sealing arrangement for a compressor that compresses a gaseous mixture of air and fuel includes a pressurized air supply duct for supplying pressurized air into a leakage pathway defined between a compressor wheel and a housing of the compressor, which leakage pat... | 08/07/2007 |
| 7247001 | Impeller An impeller (1) according to the present invention has a disk-like main plate (10), a blade (20) joined to the main plate, and a side plate (30) having a suction port. A boss hole (12) is formed in a central portion of the main pla... | 07/24/2007 |
| 7244095 | Dual pressure Euler steam turbine A turbine, including a rotor on a shaft, and having in combination stationary nozzles discharging steam at a first pressure or pressures thereby producing impulse forces on the rotor; internal passages in the rotor producing a pressure head increase in the discharge... | 07/17/2007 |
| 7201557 | Rotary pressure exchanger A pressure exchanger for the transfer of pressure energy from a high pressure fluid stream to a lower pressure fluid stream wherein a generally cylindrical housing contains a rotor having a plurality of channels extending axially therethrough and a pair of end cover... | 04/10/2007 |
| 7198457 | Single-shaft multistage pump A single-shaft multistage pump is provided to make small-sized and space-saved possible. The single-shaft multistage pump includes a rotary shaft on which impellers are disposed at multiple stages, bearings and for supporting the rotary shaft, and a balance device a... | 04/03/2007 |
| 7166314 | Method of impregnation of food and vitamin C-containing egg and pidan-like egg obtained by this method The method of impregnation treatment for foods comprises impregnating the foods with a liquid component or a gas component by contacting the foods with the liquid component or the gas component after vacuum treatment or in the vacuum state and/or cooling the foods i... | 01/23/2007 |
| 7163368 | Hydrodynamic bearing runner for use in tilting pad thrust bearing assemblies for electric submersible pumps An electrical submersible pump runner having a core layer and a wear layer affixed to the core layer. One embodiment of the invention provides an electrical submersible pump that includes a motor section and a centrifugal pump section. A seal section and rotary gas ... | 01/16/2007 |
